In true CSI or Law and Order style, he might have more than one bullet, and the medical examiner would have to determine which bullet was the fatal one, and it could have come from more than one gun....But, that would take too much thought.....

We're talking about the graduates of The Barney Fife Police Academy… do you think they can even figure out the difference? All these suspects are going to confuse the SPD, they might go with the "butler did it!"